Massac County RainfallUnited StatesILMassac County35%Metropolis 35% Chance 40%Brookport 40% Chance 35%Mermet Lake 35% Chance Big BayBoazBrookportCretaceous Hills Nature PreserveFort Massac State ParkHillermanJoppaMassac Forest Nature PreserveMermetMermet LakeMetropolisMetropolis Municipal AirportNew ColumbiaRound KnobSamothShady GroveUnionville